import test from 'node:test';
import assert from 'node:assert/strict';
import fs from 'node:fs/promises';
import os from 'node:os';
import path from 'node:path';
import crypto from 'node:crypto';
import {spawnSync} from 'node:child_process';

test('supervised SDK reads a credential file and proves instance identity without an environment token', async t => {
  const directory = await fs.mkdtemp(path.join(os.tmpdir(), 'qx-sdk-credential-'));
  t.after(() => fs.rm(directory, {recursive:true, force:true}));
  const token = crypto.randomBytes(32).toString('hex');
  const filename = path.join(directory, 'process-token');
  await fs.writeFile(filename, token, {mode:0o600});
  const env = {...process.env, CAMINO_RUNTIME_AUTH_TOKEN_FILE: filename,
    CAMINO_RUNTIME_AUTH_REQUIRED:'1', QUIXOS_RUNTIME_INSTANCE_ID:'instance:test'};
  delete env.CAMINO_RUNTIME_AUTH_TOKEN;
  const result = spawnSync(process.execPath, ['--input-type=module', '-e', `
    import {createPackageRuntimeRoutes} from ${JSON.stringify(new URL('../dist/index.js', import.meta.url).href)};
    createPackageRuntimeRoutes({packageRevisionId:'package:test',exports:{}})({
      service(_type, implementation) { console.log(JSON.stringify(implementation.handshake({nonce:'challenge'}))); }
    });
  `], {env, encoding:'utf8'});
  assert.equal(result.status, 0, result.stderr);
  const handshake = JSON.parse(result.stdout);
  assert.equal(handshake.authenticationProof, crypto.createHmac('sha256', token)
    .update(JSON.stringify(['challenge','instance:test','package:test'])).digest('hex'));
  assert.ok(handshake.capabilities.includes('epoch-grants-v1'));
  assert.ok(!result.stdout.includes(token));
});